Nesting For Loops Error

Nesting For Loops Error
0

#1

Tell us what’s happening:
“TypeError: unknown: Cannot read property ‘0’ of undefined”

How can I fix this? x.x

Your code so far


function multiplyAll(arr) {
  var product = 1;
  // Only change code below this line
  for (var a = 0; a < arr.length; a++);{
    for (var b = 0; b < arr[a].length; b++){
      product = product * arr[a][b];
    }
  }
  // Only change code above this line
  return product;
}

// Modify values below to test your code
multiplyAll([[1,2],[3,4],[5,6,7]]);

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/nesting-for-loops


#2

Not sure if you realize you have a semi-colon between the closing ) and the opening { of your outer for loop statement. It is causing your code to not behave the way you are expecting.